For Loop read different data from workspace

2018 7 25
3 个回答
更新时间：2018 7 25
1 次查看（30 天）

0 个投票

Hey, so I am kind of new to matlab and got the following problem. I tried my best to find a solution at the internet but I guess I wasn't really able to adapt it to my problem.
I want to save different data in an array or cellarray like:
t{1} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_1.Soc.InitialCapacity.Text);
t{2} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_2.Soc.InitialCapacity.Text);
t{3} = ...
but with a for loop. The data in
ans.Configuration.CustomDefinitions.MyCellElement1_1.Soc.InitialCapacity.Text
is a datapath in my workspace, that leads to a string. I already tried different stuff like strcat(), but it didn't work.
Thanks in advance
Edit:
I want it to look like this:
for i=1:1:10
t{i} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_i.Soc.InitialCapacity.Text);
end;
But of course this would not work.

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回答（3 个）

Brett Bodamer
Brett Bodamer 2018-7-25

0 个投票

for i=1:length(t)
...
end
This should work. Put your assignment instruction inside of the for loop with i being your current index into the cell array.

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Alexander Epp
Alexander Epp 2018-7-25
t{1} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_1.Soc.InitialCapacity.Text);
t{2} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_2.Soc.InitialCapacity.Text);
Problem is i can't use the index i into the variable
for i=1:1:10
t{i} = str2double(ans.Configuration.CustomDefinitions.MyCellElement1_i.Soc.InitialCapacity.Text);
end;
This would not work. My question is how to use an index in a variable into function str2double. Sorry if my question wasn't clear enough.
Brett Bodamer
Brett Bodamer 2018-7-25
Okay I see. I'm not sure how that long input is interpreted. But if it is a string, try concatenating the value of i into the string. It would look like this.
tempVar = ['1', num2str(2), '3'];

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Stephen23
Stephen23 2018-7-25

0 个投票

Do NOT use ans as a variable name. I use S in my code below:
out = cell(1,10);
for k = 1:10
fld = sprintf('MyCellElement1_i.Soc',k);
str = S.Configuration.CustomDefinitions.(fld).InitialCapacity.Text;
out{k} = str2double(str);
end
Alexander Epp
Alexander Epp 2018-7-25

0 个投票

That did the job
IniCap=zeros(40,1);
for cell_counter=1:40
IniCap(cell_counter) = str2double(ans.Configuration.CustomDefinitions.(['MyCellElement1_' num2str(cell_counter)]).Soc.InitialCapacity.Text);
end
Thanks

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